This primer is an aid to developers, architects and aspiring self-builders in understanding the key principles of PassivHaus design. The term ‘PassivHaus’ refers to a voluntary, ultra low-energy construction standard first developed over a decade ago by Dr Wolfgang Feist of the Passivhaus Institut Germany.
The company, which is still family owned, was founded by Karl Gaulhofer as a carpenter and cabinet maker’s shop in Frohnleiten in Styria in 1919. Actual industrial window production commenced in 1963 when GAULHOFER started producing so-called standard windows as one of the first companies in Austria. This corresponded with the building boom during the wirtschaftswunder years, and the standard windows were soon sold via a dealer network covering all of Austria.
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“Vilbaiva Fenster” has been serving its customers through manufacturing high quality wooden windows and doors since 1949. With a wealth of more than sixty years experience and service we pride ourselves on being one of the most established and respected window companies in Lithuania.